A) \[m=n=78\]
B) \[n=m8\]
C) \[m+n=68\]
D) \[m=n=68\]
Correct Answer: A
Solution :
Since there are 8 males and 5 females. Out of these 13, if we select 11 persons, then there will be at least 6 males and at least 3 females in the selection. \[m=n=\left( \begin{matrix} 13 \\ 11 \\ \end{matrix} \right)=\left( \begin{matrix} 13 \\ 2 \\ \end{matrix} \right)=\frac{13\times 12}{2}=78\]
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